Cell wall structure

The cell wall is a rigid layer that surrounds the cell membrane in plants, fungi, bacteria, and some other organisms. It provides structural support, protection, and shape, preventing the cell from collapsing or bursting. In plants, it mainly consists of cellulose, a stable carbohydrate that forms a strong network. Fungal cell walls contain chitin, while bacterial walls often have peptidoglycan. The wall acts like a sturdy barrier, maintaining the cell's integrity while allowing necessary exchanges with the environment through special channels. Overall, it’s essential for maintaining cell shape, strength, and protection.